On the invoke-diff-cmd branch:  Adjust indentation.

* subversion/tests/cmdline/diff_tests.py 

  (diff_invoke_external_diffcmd): Adjust indentation..




git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/invoke-diff-cmd-feature@1488629 13f79535-47bb-0310-9956-ffa450edef68